Watchmaker s tool



(No Model.)

W. C.. SEYFRIBDT.

WATGHM-AKERS TOOL. 'NO- 533,923- Patented Feb. l2. 1895l 7 Mmmm uIllllmmm.

Iran STATES PATENT FFIC.

WILLIAM o. sEYFRIEDnon FORT WORTH, TEXAS.

WATCHMAKERS TOOL.

SPECIFICATION forming part of Letters Patent No. 533,923, dated February12, 1895.

Y Application filed October 10, 1894. Serial No 525.498. (No model.)

To all whom it mag/concern:

Beit known that I, WILLIAM O. SEYFRIEDT, of Fort Worth, county -ofTarrant, State of Texas, have invented certain4 new and usefulImprovements in Watchmakers Tools, of

which the following is a specification, reference being had to theaccompanying drawl indicates the balance wheel' of a watch andv ings. y

. The object of my invention is to produce an improved tool for removingthe collet and hair spring of a watch from the balance wheel arbor,without injuring the hair sp'ring of the watch and at the same timeholding the bal,

anco wheel secure against accident or injury. In the accompanyingdrawings:l Figure I is a side elevation of my tool, in operativerelation with the 'l balance wheel, both, being shown on an' enlargedscale and the collet being shown in section. Fig. II is a perspectiveView of my tool detached and opened. Fig. III is an end View thereof.Fig. IV is a modied form of the fork or c ollet separator.

Referring to the figures on the drawings:

2 its arbor.

3 indicates the hair spring and 4 the collet to which, at onc end asusual, the hairspring vis attached.

..5 indicates one leg of my tool and 6 the other. They are unitedtogether at their upvperends, as indicated at 7 and one or both may beof resilient spring metal constructed I so as to stand normally in theseparated po sition shown in Fig. II of the drawings, after the mannerof ordinary tweezers. I prefer, however, to make the leg 5 straight, asillustrated, and comparatively rigid, making the leg 6 the active one.

7a indicates the collet separating fork which may be made integral withthe leg 5 and bent at right angles thereto, or it may be a made of aseparate piece of metal and welded.,

of the ordinary cross piece 1l of a balance wheel. l It is formed withor attached to the.

shown in Fig. II of the drawings, the fork is slipped upon the arborbetween the collet and the cross piece and the leg 6 is pressed betweenthe thumb and fore finger of the operator until it strikes th'e arborabove the cross piece.V In this position the cross piece is closelyconfined` between/theupper face of the fork and the lower face ofthe-arbor bearing piece 10 and is' prevented from tilting or twisting,but by a continuons pressure upon the legs is forced along with thearbor,until the arbor'is confined between thejarbor seats in the forkand-the arbor bearing piece, Where it is securely held by the hand ofthe operator. As the arbor is driven into the fork, the beveled or wedgeshaped edges ofthe fork force themselves between the cross piece and thecollet and, by an even and easy movement, separate the collet from thearbor with a precision which insures its separation with perfect safetyto the hair spring.

In practice different sizes of tools to suit various sizes of watcheswill'be manufactured.

I am aware that a collet removing, tweezershaped tool, such for exampleasis shown in Patent No. 262,875, issued August 15, 1882, is not new,but the' subject matter of that patent and devices of similar characterare easily distinguishable from my invention, and the differences areclearly defined in the following claims, to wit: l 1

1. In a collet removing tool, the combination with a pair of legsadapted to close toward each other, of a collet separating fork on oneand an arbor bearing piece on the other, and arbor bearing seats inthefork and in the arbor bearing piece, respectively, between which thearbor is adapted to be se- "curely held, substantially as specified.

2. Ina collet removing tool, the combination with a pair of legsadaptedto move toward each other, of a collet separating fork, and anarbor bearing piece in dierent planes and moving parallel to each otherto securely clamp an arbor between the seats in the fork and in thearbor bearing piece, substantially as speeied.

3. In a collet removing tool, the combination with a pair of tweezerlegs, of a collet separating fork, and an arbor bearing piece carried atright angles on the legs, respectively, and moving parallel to eachother, but in different planeswhereby an arbor ma7 be securely clampedbetween the bearing seated in the fork and in the arbor bearing piece,substantially as specified.

4. In a collet removing tool, the combination with a pair of tweezerlegs, of an arbor

